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In medical imaging, the heterogeneity of multi-centre data impedes the applicability of deep learning-based methods and results in significant performance degradation when applying models in an unseen data domain, e.g. a new centreor a new…

Computer Vision and Pattern Recognition · Computer Science 2020-08-12 Hongwei Li , Timo Loehr , Anjany Sekuboyina , Jianguo Zhang , Benedikt Wiestler , Bjoern Menze

Medical image segmentation is vital to the area of medical imaging because it enables professionals to more accurately examine and understand the information offered by different imaging modalities. The technique of splitting a medical…

Image and Video Processing · Electrical Eng. & Systems 2024-09-01 Aitik Gupta , Joydip Dhar

Learning-based approaches for semantic segmentation have two inherent challenges. First, acquiring pixel-wise labels is expensive and time-consuming. Second, realistic segmentation datasets are highly unbalanced: some categories are much…

Computer Vision and Pattern Recognition · Computer Science 2020-02-18 Arantxa Casanova , Pedro O. Pinheiro , Negar Rostamzadeh , Christopher J. Pal

Active learning is a machine learning method aiming at optimal design for model training. At variance with supervised learning, which labels all samples, active learning provides an improved model by labeling samples with maximal…

The success of deep learning methods in medical image segmentation tasks usually requires a large amount of labeled data. However, obtaining reliable annotations is expensive and time-consuming. Semi-supervised learning has attracted much…

Image and Video Processing · Electrical Eng. & Systems 2021-07-13 Yichi Zhang , Jicong Zhang

Medical image segmentation, the task of partitioning an image into meaningful parts, is an important step toward automating medical image analysis and is at the crux of a variety of medical imaging applications, such as computer aided…

Computer Vision and Pattern Recognition · Computer Science 2016-07-06 Masoud S. Nosrati , Ghassan Hamarneh

Medical image segmentation is an increasingly popular area of research in medical imaging processing and analysis. However, many researchers who are new to the field struggle with basic concepts. This tutorial paper aims to provide an…

Image and Video Processing · Electrical Eng. & Systems 2023-04-13 Diedre Carmo , Gustavo Pinheiro , Lívia Rodrigues , Thays Abreu , Roberto Lotufo , Letícia Rittner

Supervised machine learning relies on the availability of good labelled data for model training. Labelled data is acquired by human annotation, which is a cumbersome and costly process, often requiring subject matter experts. Active…

Machine Learning · Computer Science 2023-10-31 Sharath M Shankaranarayana

In recent years, significant progress has been made in developing more accurate and efficient machine learning algorithms for segmentation of medical and natural images. In this review article, we highlight the imperative role of machine…

Image and Video Processing · Electrical Eng. & Systems 2019-11-07 Hyunseok Seo , Masoud Badiei Khuzani , Varun Vasudevan , Charles Huang , Hongyi Ren , Ruoxiu Xiao , Xiao Jia , Lei Xing

Active learning seeks to reduce the amount of data required to fit the parameters of a model, thus forming an important class of techniques in modern machine learning. However, past work on active learning has largely overlooked latent…

Machine Learning · Computer Science 2024-02-20 Aditi Jha , Zoe C. Ashwood , Jonathan W. Pillow

When applying a Deep Learning model to medical images, it is crucial to estimate the model uncertainty. Voxel-wise uncertainty is a useful visual marker for human experts and could be used to improve the model's voxel-wise output, such as…

Image and Video Processing · Electrical Eng. & Systems 2022-11-02 Anton Vasiliuk , Daria Frolova , Mikhail Belyaev , Boris Shirokikh

Deep learning models for object detection in autonomous driving have recently achieved impressive performance gains and are already being deployed in vehicles worldwide. However, current models require increasingly large datasets for…

Computer Vision and Pattern Recognition · Computer Science 2025-05-02 Esteban Rivera , Loic Stratil , Markus Lienkamp

Active learning aims to reduce the labeling effort that is required to train algorithms by learning an acquisition function selecting the most relevant data for which a label should be requested from a large unlabeled data pool. Active…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Javad Zolfaghari Bengar , Joost van de Weijer , Laura Lopez Fuentes , Bogdan Raducanu

Accurately segmenting different organs from medical images is a critical prerequisite for computer-assisted diagnosis and intervention planning. This study proposes a deep learning-based approach for segmenting various organs from CT and…

As an important data selection schema, active learning emerges as the essential component when iterating an Artificial Intelligence (AI) model. It becomes even more critical given the dominance of deep neural network based models, which are…

Machine Learning · Computer Science 2022-12-27 Rinyoichi Takezoe , Xu Liu , Shunan Mao , Marco Tianyu Chen , Zhanpeng Feng , Shiliang Zhang , Xiaoyu Wang

Active learning aims to select samples to be annotated that yield the largest performance improvement for the learning algorithm. Many methods approach this problem by measuring the informativeness of samples and do this based on the…

Machine Learning · Computer Science 2021-08-02 Javad Zolfaghari Bengar , Bogdan Raducanu , Joost van de Weijer

We study different aspects of active learning with deep neural networks in a consistent and unified way. i) We investigate incremental and cumulative training modes which specify how the newly labeled data are used for training. ii) We…

Machine Learning · Computer Science 2023-01-02 John Daniel Bossér , Erik Sörstadius , Morteza Haghir Chehreghani

We study a fundamental learning problem over multiple groups with unknown data distributions, where an analyst would like to learn the mean of each group. Moreover, we want to ensure that this data is collected in a relatively fair manner…

Machine Learning · Computer Science 2025-05-22 Abdellah Aznag , Rachel Cummings , Adam N. Elmachtoub

Recent advances in conditional image generation from diffusion models have shown great potential in achieving impressive image quality while preserving the constraints introduced by the user. In particular, ControlNet enables precise…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Hannah Kniesel , Pedro Hermosilla , Timo Ropinski

Deep learning models have become the dominant method for medical image segmentation. However, they often struggle to be generalisable to unknown tasks involving new anatomical structures, labels, or shapes. In these cases, the model needs…

Image and Video Processing · Electrical Eng. & Systems 2024-09-17 Jing Xu